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Galvanized malleable iron reducing coupling with female NPT threads

Anvil

Anvil 0311089403 2" x 1" FNPT Galvanized Reducer trap

SKU CH-JKBK-4A6HH MPN 0311089403

Galvanized malleable iron reducing coupling with 2-inch and 1-inch FNPT threads for Schedule 40 pipe systems

  • TypeDrain Components
  • Galvanized malleable iron resists corrosion
  • Class 150 rating handles 300 psi at 150 °F
  • Schedule 40 compatibility fits standard piping
  • 2 in to 1 in FNPT reduces line size
  • Anvil 311089403 manufactured for reliable drainage connections

Galvanized Reducing Coupling

This malleable iron coupling connects a 2 inch female NPT pipe to a 1 inch female NPT pipe. The galvanized finish provides corrosion resistance for water and air lines. It is rated for Schedule 40 piping systems and carries a 300 psi pressure rating at 150 degrees Fahrenheit. The Class 150 construction suits standard residential and commercial plumbing installations.

Installers needing a straight size transition

The coupling serves plumbers and maintenance technicians who must join two different pipe diameters in a straight line. It is not intended for directional changes, so installers needing an elbow or tee should select a fitting designed for that purpose. Buyers requiring a male-threaded end or a different pressure class will need an alternative component.

300 psi at 150 degrees Fahrenheit

This pressure-temperature rating determines whether the fitting matches the system design limits. Verify that the operating pressure and temperature of your piping network stay within this Class 150 boundary. Exceeding either value risks joint failure and voids the manufacturer's pressure guarantee.

Highlights

  • Galvanized malleable iron resists corrosion
  • Class 150 rating handles 300 psi at 150 °F
  • Schedule 40 compatibility fits standard piping
  • 2 in to 1 in FNPT reduces line size
  • Anvil 311089403 manufactured for reliable drainage connections

Specifications

TypeDrain Components
BrandAnvil
Model0311089403

Questions about this item

What does the NPT thread standard mean for sealing this 2" x 1" galvanized reducer?

NPT threads are tapered so they seal by thread interference; apply pipe-thread sealant or PTFE tape on the male threads before tightening to prevent leaks at 300 psi.

What pipe schedule and wall thickness does this Class 150 malleable iron fitting match?

It is rated for Schedule 40 pipe, so the 2" and 1" female ends align with standard Schedule 40 wall thickness for a secure fit.

How should the reducer be oriented and tightened during installation to avoid a common mistake?

Install with flow direction in mind, hand-tighten then turn 1–2 full turns with a wrench on the hex flats; over-tightening can crack the galvanized iron.

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